Need help baby ain't mine, in love with girl what do i do?

Ok my girlfriend and I split up for about 4 months she was hanging out with her ex. One thing led to another they had sex. Two weeks after the encounter she told me, we took some home pregnancy test all came out negative. She got her period and right...

after she got off it we took another right before we had sex, came back negative. So we have sex I used protection, well later that same night we woke up and did it again. I felt it coming and left it in for awhile, I know for a fact that I squeezed some in her and then I pulled out and let the rest, well ya know. About four or five days later she is bleeding but it ain't her period, let me remind you that is about 1 month now since they did it. After that we took some more pregnancy test all negative again. Since then I have been using protection, today she just took a test just to make sure once more and it came out positive and she is late on her period, scared she took 2 more same result. We love each other and don't want to with out each other, but this is something I can not deal with. I usually don't believe in abortion, but this is happening to me and it ain't even mine. We are a young couple we are scared, three years and a life time of happieness are riding on this. Please serious responses only, please put yourself in our situation, how do you say goodbye to someone you love and know you want to be with, when it can be fixed. please help

ok isnt ther still a possibility the child is still yurs??
how old are the two of yu?
and I've seen a situation like this work out
it happened many times in my family
raise the child as yurs don't treat her as if shes sum other guys
make he/she yur baby
but this will only work if the biological father stays out of all 3 of yurs lives
if he doesnt it will be difficult to move on wit this
bt I don't think yu shud leave this girl
yu love her so stay by her side
and honestly abortion is not always a bad idea
in this case if the two of yu believe thts what needs to be down then do it
im sure itll b hard bt ull know if its the rite thing o do or not

***I usually don't believe in abortion...***

...so you're a hypocrite...

***but this is happening to me and it ain't even mine.***

You don't know that, so stop lying to yourself... contraception is NEVER 100% effective, and you also ADMITTED to being irresponsible. Whether she aborts of not is ultimately HER DECISION. If you want to KNOW if the child is yours or not, you can get a DNA test.

Also, if you REALLY do love her, you wouldn't be acting so callous about the situation...

I would guess that this baby IS YOURS for a couple reasons...

1) She took multiple pregnancy tests that came back neg
2)She got her period
3)You had unprotected sex and came inside her!!! (only a little still counts)
4)NOW she take a test and its positive.

Now here's my questions for you, and I'll try not to call you names, although it will be very difficult...

1)How long do you think it takes for a woman to get pregnant? It's def less than a month and if she got her period then she's probably NOT pregnant by the guy before the period
2)WHY WHY WHY wouldn't you just get a DNA test before stressing about the fate of your relationship?
3)OMG, how awful would you feel if this baby was yours and you decided to abort it? Jesus, as a mother I can tell you that my daughter is the BEST thing to ever happen to me and I would be lost without her...
4)Be HONEST. Are you just trying to duck out of the responsibility a child requires? Or are you scared that the only thing that will change is that you aren't the only person on your girlfriend's mind?
5)WHAT DOES SHEEE WANT??? You didn't put that in and I'd really like to know