He said he wouldn't be my friend unless I date him

Your friend shouldn't put limits on your friendship. If this guy is placing restrictions or ultimatums on your friendship I'd say drop him too. He's not being a true friend

Your friend can't make you go out w/ them but it sounds like someone really wants 2 be with you if they try and force you to go out with them but if you don't wanna go out with your friend then shit you don't have to...

Be with whichever one you want. Obviously your 'friend' isn't really a friend because he is threatening your relationship. He should realize that you can't do anything that will make you unhappy.

Be with the one that you're happy with and shows you that he wants to be with you.

That's not a real friend if they are gonna treat you like that. If you and your ex still like each other than why did you break up?

A real friend wouldn't have you make that type of choice. In the end you'll know what to do.

Well I have been in that situation. Just give it a shot!!

Your other friends sounds like an ass. You can't blackmail someone into going out with you. I wouldn't even be his friend anymore, what a tool.