Why won't my iPhone 5 charge? - 2

When iPhone in to charge it doesn't turn on. Sometimes it will show that its charging for hours and not turn on and sometimes it just does nothing. A couple weeks ago i dropped my iPhone in the shower and it landed in an inch or two of water for only a few seconds. I quickly took it out and dried it with a towel and then a hair dryer on low heat. My phone has worked fine since then up until now. Before it died completely it gave me the warning message that said something like "this cable or accessory is not compatible with this device." when i plugged it in. I've used different charges from the wall and the computer so i doubt its the charger. My phone is really new so i don't think it would be a dead battery either.

what can i do to solve this problem?

Weather iPhone app? Windchill?

Is there an iPhone app the includes the windchill? It seems like none of them do.

I live in Minnesota so it's pretty important information

Does this mean that it's over between us?

Two nights ago I was in my boyfriends car and we were having a good time then all of a sudden I saw him texting someone and her name had the couples iPhone emoji (the one with the couple kissing) saved next to it (the same way my name is also saved). I instantly started ignoring him and got an attitude and just left the car to go back home because I didn't want to instantly jump into conclusions. Then when I got back home I called him and he forwarded my call and texted me saying that I should bug off and I shouldn't call him. I then replied by asking who the girl is and I called him then he said that I have an attitude, he doesn't like my attitude so I should call him tomorrow because he's talking to someone (must have been the girl I saw on his phone). Then I got angry and started saying that I'll leave him alone for good because I can do what he is doing too. I didn't call him after that and we're both stubborn so I know that he wouldn't call me, am I the one in the wrong here?

Should i download mavericks os x?

I have a mac book pro version 10.5.8
i have ios 7 on my iphone
my itunes isn't up to date because my computer isn't up to date, therefore it won't let me plug my phone into my computer.
i've heard some bad tings about mavericks. Should i get it or just get mountain lion.
i really only care about getting my itunes to work.

Am I the one in the wrong here?

Two nights ago I was in my boyfriends car and we were having a good time then all of a sudden I saw him texting someone and her name had the couples iPhone emoji saved next to it (the same way my name is also saved). I instantly started ignoring him and got an attitude and just left the car to go back home because I didn't want to instantly jump into conclusions. Then when I got back home I called him and he forwarded my call and texted me saying that I should bug off and I shouldn't call him. I then replied by asking who the girl is and I called him then he said that I have an attitude, he doesn't like my attitude so I should call him tomorrow because he's talking to someone (must have been the girl I saw on his phone). Then I got angry and started saying that I'll leave him alone for good because I can do what he is doing too. I didn't call him after that and he's stubborn so I know that he wouldn't call me, am I the one in the wrong here?