Readers won’t stop sending the Bad Advisor their real-ass questions to answer, so the Bad Advisor is going to try her hand at answering them.
Your ex is not sending you mixed messages. Your ex is sending you one extremely clear message: he likes having you around for light petting and is not interested in dating you—or, based on the information you’ve given here, anyone else—exclusively. In the movies, this dude would be a confused bad boy whom you, the misunderstood and pining love non-interest, would eventually charm into ending his dally-wag light petting ways. In real life, this dude is perfectly capable of going out with you if he wants to, but he doesn’t want to. Remember that time he told you he didn’t want to go out with you? He doesn’t want to go out with you.
Because you’ve asked “WTF do I do?” the Bad Advisor assumes that you’re not cool with this arrangement, which means that what the fuck you do is tell this dude to cool it with the light petting, limit your contact with him, and seek out friendships (platonic or otherwise) that don’t make you ask yourself questions like “What the fuck do I do?” Spend your brain-waves, heart-chugs and pants-jitters on relationships that aren’t held together by Scotch tape, telepathy and second-guessing.