If they are a cheater I won't have sex with them. Having sex with cheaters is the fasttrack to STDs. Most STDs come from people who cheat. Now, if I take them back or not, it depends on if they admit they cheated, or get cought. If they cheat, and admit it, and beg for forgiveness, I'll stay with them and just be free to have sex with whoever I want from that point. If they don't tell me and I find out on my own, I'll never speak to them again, and just drop them. Basically they will be treated as a complete stranger. There is no chance of friendship if they cheat and lie about it, or get caught, but if they admit it, I can get over it and be friends.
