NO MORE LDRs! And no don't let their issues become your problem to deal with. Your relationships ended because of bad choices (choosing the wrong person to date, them having personal issues or circumstance, like dating in college....should have been banging lost of chicks then) and you don't know when to quit. Like I said make yourself a priority, not them. You need to have a expectation check list. If it is not being fulfilled...bail.