Do you ever love someone even if they treat you like S***?

At the beginning of the year I met this really sweet, hot guy in my algebra class and he would help me with my math. We would stare at each other all class and flirt alot and he would tickel me. Then I found out he was a Satanist and I'm a Christian so I told him we could only be friends. Then I couldnt stop myself and I told him I still really liked him. Then he told me he loved me (texted this tons of times in a row) then he started saying how he missed me and wanted to kiss me, etc.... then he told me that if we were alone together that he wanted to have sex with me. We never even started dating but I called him a prick and never spoke with him. Well at least till this month a few weeks ago. He still stared at me alot and showed all signs of liking me and I couldnt take it anymore so I e-mailed him saying that I miss him and to email me back. He did saying he hates me and never liked me and that he only opens up to certain people and that id never be one of them. Then I cried so much and emailed him back swearing at him and saying I never wanted to talk to him. He sent one back saying the same thing and to never talk to him again. So the other day I walked past him with my guy cousin to make him jelous because I was hurting so much and a few minutes later someone saw him crying. His friend is friends with me and he told me that the guy was really upset because he saw me walking by with my cousin and he thought it was my bf. Now I feel horrible. The other day I passed by him and his friends and he said ';Hey Anna!'; The way he used to when we were flirting and stuff (so really friendly) I said Hi back and looked sad. But if he talked to me is this a sign he misses me? the other day he walked up to me and started talking alot but I was on my phone and when I got off he was gone...... Then today he walked up to me and started talking fast and I said What? then he said oh I was just messing around. Im confused Do you think he still loves me?Do you ever love someone even if they treat you like S***?
ok please no one take offense...this is only from my personal experience. I'm a christian as well and well ive met a few really ';nice'; people who were satanists...or so they appeared to b but I saw a guy lash out at someone just mentioning God... a really together individual, the person was in no way saying u shld become a Christian i mean I really think God just kind of came up and I also dated this guy who was sort of a christian but then a cpl years later became a wiccan (in my opinion wicans are like the same thing but maybe not as bad b/c in most circumstances they dont realize they're worshiping satan) and anyways he COMP changed and now we don't even talk all I'm saying is it might be better to just walk away now esp after the stuff u mentioned as well...b/c right now its not ';too'; hard to leave but if u get more involved with this guy it would prob hurt a lot worse...i hope i didn't offend u in any way just wanted to share my experiences and offer some advice :)