I am a bit annoyed with a friend of mine

Basically the other day at my place we played a couple of games, and i think all of them were ranked. At a certain game (when i was 1 win and 1 loose in my series to silver III) i basically had to carry all my team, and i was pretty much the only one winning the lane during the laning phase. My friend, which you might have played with a couple of times already, went jungle and i went top. First of all, i didn't really like his pic, since he went Diana, and with me playing Kha'zik top (i was first pick), we had basically no tankiness on our team. Hardly we would win the game if for example i failed top, and the same would happen if Diana also somehow got outplayed, and underlvl. So basically my friend starts 0-2 and all other lanes except top are loosing, so honestly i was loosing my hopes, cuz even though i was winning my lane, completely outfarming my enemy, i wasn't managing to kill him sometimes, because either mana issues *spamming w or doing a e+w+q combo* or because i was playing passively because of the pressure from their jungler.
So basically the story jumps, and we were loosing, and at a certain team fight, at their jungler, near the wraiths, we engage on a team fight, and surprisingly, we completely own them, 2 of them down and we could get more. My friend yells at me "help me do the penta" *yeah, like doing a double means you will do a penta, when 2 of them were completely far away from our range*, and i actually end ksing the kill, and killing the third enemy. It wasn't even on purpose or anything, i just wanted him to die and not get way, more important than someone getting the triple, is winning a game that would decide if i went silver III or kept at silver IV, but no, my friend got mad telling him i ksed, when i did a lot more damage than him, and i didn't even do it do steal, i did it because i was obviously spamming the buttons.
And there was also one moment during the game, before that, that he got mad that i didn't follow him on the dragon pit into their jungle. But i cleared said "dude, i am going push top and mid, i am not gonna follow you, since i have no mana left and i am not even playing with flash(top and mid had both huge waves)*he basically kept running to their jungler after an ez, which was out of his ult range, and then i said "you are overextending, lee is going to show up and you are going to die*, and obviously lee ended showing up, but he didn't even have any interference on what happened, which was my friend running back from ez, and i was basically done with the mid wave and was going top for the top's wave, and didn't even came to help him *it would be helpless at that time anyway* and he got mad, even though his entirely all his fault from being greedy. And the problem isn't being greedy, at some point it could actually be worth it, but without any flash or basically without any proper mana at all, there was no reason to go after someone, a place that isn't warded, when both mid and top were being pushed, and we might loose tower if no one pushed it fast. So yeah, all this to tell you what happened, in a game i played with him yesterday!
I was playing a normal with him, and i was jungle kha'zik. At 5 min i had prolly already 5 kills, cuz i counter-jungle and manage to kill their kha easy.
Meanwhile my friend playing Ez was already 0-1, and if i am not wrong blitz was 0-2 ... basically bot lane already loosing hard, and my friend saying things like "yeah don't come ... keep not coming", even though game had barely started, and i had already putted a lot of pressure on their jungler and their mid.
So all this to say, i kept snowballing the game, and we got to a point, where we team fighted on the dragon pit, at this time i had already 2 things evolved on kha, the w and the e. Basically i had everything needed to use all kha potential on a teamfight. I do a Quadra kill, and finally i am with blitz to kill their last member, it had been like 3 sec since i did the quadra, so it wouldn't be unofficial, i only had to q and i would get the penta, and out of nowhere, without any need at all my friend "q" and hits him *max range q much likely* stealing my penta. This would had been my second PENTA! And he stole it, even though i think he thought his q wouldn't kill tf , or it wouldn't even hit anyway, but ... instead of saying "sorry dude", he did say later XD, he started with useless talk about how i stole him a penta *that double kill *cough*, which i kinda didn't steal on purpose, and i really needed to win that game to go to silver III* ... but w/e. It was a normal game, that's why i don't really care much *it's not as hard to do well, as it is on rankeds*, but still it would be a penta, and it would had been such a great one. I did basically all my team damage, spamming my q+w and reseting my e and jumping around and chasing, and having that taken away when it would had been an obvious penta, specially by my friend was sad, specially for the reasons why it happened.
But yeah, as much as i like my friend, and even though i think he is not a bad player * though not as good as i am

* it's hard to play with him, cuz he basically never admits his faults, and even on a fucking normal game at 5 min he was already "crying" for help, and telling i didn't gank and stuff like that, when he got owned bot by some randoms dude on a normal game ahahhaha XDDDD. I mean he isn't much used to playing adc, but still ... in most cases, if i lost my lane on a normal game, i would prolly admit so *unless something really weird happened during the game, that made it obvious why i lost*, but he basically lost 2vs2, without any of the junglers interference XD
---------- Post added at 11:14 AM ---------- Previous post was at 11:13 AM ----------
The games i am talking about can be seen here ->
http://www.lolking.net/summoner/euw/27510387#history, the most recent one is where i had my penta stole, and the ranked games with him are also somewhere on that page