Search Results: why do guys kiss girls' necks

So I've known this guy for 6 years, we met initially it started out with everything that it shouldn't have but an innocent kiss and then we both just stayed friends, and I got a boyfriend he got a girlfriend. Then, I got a new boyfriend and he dumped his girlfriend or something, and he didn't like my boyfriend and I caught him smelling me once, like, my neck. Getting too close, he didn't deny it (did later tho) when I accused him & my mutual friends were really not cool with him hanging around because he was all over me and I never really noticed. Then throughout the years we evolved into more of a best friend relationship so I thought, but he never dated anyone again despite being very attractive. When I got engaged he picked up and moved & recently blew me off when he was supposed to visit. He didn't even call to say "Sorry I can't visit." He was pretty sure that I was going to stop being friends with him, & he was right I was going to tell him to his face potentially depending on the situation, I couldn't end a friendship over the phone, in text or email that was that long & personal. He had yelled at me on my birthday & called me a spiteful b word, then claimed he didn't even know it was my birthday even though I mentioned it in a countdown to him every day that week because I was turning 25 so it was a big deal. He apologized, got drunk the next day sent sexy pics with like here's a present bday girl ;) or something like that. I thought people do stupid things they don't mean when they're drunk but according to studies I read online, people mean that stuff. He told me I was the closest thing to romantic love he ever had, he left the STATE right after I told him I got engaged, asked why didn't -I- the woman pursue him? Like he was so special. Then he blocked my fiance on Facebook but didn't block me, we usually make up by now & I really have forgiven him but the question is -can this be fixed-? If he subconsciously 'loves' me it's kinder to just stop?