my ex girlfriend had planned on going to see a friend in texas about a month ago and before she did we had sex without a condom. and while she was down there she had sex with her friend while using the condom but it broke. she didnt tell me that she and done this or i wouldnt have done anything with her when she came back. but she took a test today and found out that she is pregnant. i dont know if im the father or if he is. he doesnt know about us having sex because she doesnt want to ruin a relationship with him by telling him but i dont know what to do because i dont know if its mine or not. i need some help and some answers