Guys, if you had a crush on your friend, what would make you give up on it?

Well unfortunately it's not as simple as a friend having a crush on you- it's an ex. He's only going to give up when he knows he can't get you back.

If the dreaded question comes up just say something along the lines of him RESPECTING you as a friend because you don't want to lose your friendship. If he is immature in the end, take some separation time, he'll move onto another girl and maybe become friends with you again. But there is no sure anything. It's like gambling, stop when you hit the jackpot; well, hopefully you stop with the jackpot.

Its just his heart talking, I mean I go back and forth with my x heart brain, and then my brain always takes over and fixes it, then later I go through the same cycle. Its just love, time will fix it. Just tell him straight up, hey I love you but I can't be your girlfriend it will never work out, so if we are gonna remain talking I want to let you know its only as friends ok? Good?

Having been in a very similar situation, and still emerging from that situation of trying to remain friends with someone I dated, I can tell you this: It is very difficult. There are some cases, in post-dating times, where a friendship just cannot be made to work. If one or both parties involved still retains feelings for the other, then an immediate friendship will not work. You and your ex need to completely cut each other out of your lives for whatever amount of time is necessary to get over each other. Then, in time, you can attempt to pursue a friendship, if that's what you desire after really moving on.