Think of it this way; lets just pretend it was possible for your ex to be pregnant. Yes a male!
Would you want to be told if he was baring your child?
no you should not
Tell him you got her pregnant.
Yes, you should.
Wait until the test is complete, otherwise you may be telling him something completely incorrect. If the test is positive, you will have to tell your parents and decide what to do.
if you feel like you have done a mistake. And if you have a chance of getting your ex back . Than only..
If you got pregnant with you ex and then married his brother, then you kid will should call your husband dad even though he is no the real father.
if you are still good friends. Than you can tell your ex.
tell him or her that the other person is much cuter
if he was your ex you should be over him. If your not over him you should tell your friend or try to get him back.
You should tell him you should be friends. Then later on, it might lead up to a relationship.
Tell your ex. if he doesnt care he needs help...but also if its bad then you should tell someone
I think you should talk to your boyfriend and tell him to have a little chat with his ex.