How does he do it!? Asshole & Sweetheart Coexist

Ok Ive been dealing with this Virgo guy a little more than a month since he's been back after a previous falling out. He's a really endearing logical great advice fun kind of guy, but it seems like he has crazy swings from time to time. I think I mentioned it before. The last time we hung out there were moments where I felt like I was dealing with 2 different people. I dont know if he's having some kind of internal conflict and sometimes the devil wins while others the angel reigns, but its just weird to me. While sometimes hes joking, affectionate, talkative and flirtatious within moments he gets distant, vague, and makes snide comments. I know he doesn't believe that I just hang around the house most days, which I sincerely do...so could it be that for some reason he doesnt trust me and this is the reason for his mood swings? We arent in a serious relationship, but he's still the only guy Im dealing with on this level (I dont have the time or energy to spread myself any thinner than I am). Any ideas on what the endearing/insulting ambiguity is about?

oh you have one those people...lol

Dr.Jekyll Mr.Hyde types, wow you have your hands full and it's never going to be normal or easy. The only advice per my own experience is to let him be crazy and do nothing, just remind yourself he's the problem not you and just be yourself, if he gets too mean, starts to act out and blame or poke at you then put some distance between the 2 of you, you'll stay sane if you can do that. Absolutely do not try to figure him out, you never will, all you can do is ride the wave and jump ship when you have to.

Per my own understanding it's probably due to some kind of personality disorder and if it's not a disorder then it's a control tactic to keep you off balanced and focused in on him, so focused on him that he doesn't have to DO his part of the relationship, no longer are you expecting or demanding reciprocation, your too busy trying to manage his behavior, analyze it, fix it, he can just lean back and watch you pulling for straws trying to appease him, him him him it's about ME, you'll be wearing yourself out if you keep doing that.

Makes sense. I really dont plan on dealing with him too long as it is, I just want to figure if I should continue at all.

Continuing is up to you...I wouldn't continue, love isn't pain

I feel that if you gently lick his stomach and extract all the crust caked into his ever expanding soul you can fix him. He seems to have a problem with being two people at once, as do I. I would like to slick his crust for you very much, I actually collect peoples dry and sticky crust once I am done waxing it from their skin. It is a mind cleansing and also sorts out personalities.
Fetus's are also another great option, mmm...