HELP!!!

Let me start from the beginning... I started working at this wearhouse doing QA work. On my first day I went in for orientation and as I walk through the wearhouse I see the most amazing guy walk by. He doesn't see me but I see him. He is tall, skinny, covered in tattoos, and has long hair. ( this is very much my type of guy) I fall in lust with him then and there. After my first day I called my aunt and gushed over how much I think this guys is attractive. She tells me what any sain person would at this point "Don't get involved with anyone from work!" So as I continue to work at this wearhouse, I gain more and more friends and I start to feel welcomed here.  I still see the amazing guy everyday, I even get butterflies when I see him. I continue to work without saying anything to him. But we have this connection. We would stare at each other  through the halls with so much intensity and I wonder when will he come up to me.  Finally one day he tells me that he thinks I'm beautiful and I blush forgetting how to talk and just blurt out Who me? Thinking he was talking to someone else. I felt so emmbaresed that I avoided him forgot about a week. Then one day while I was walking back from a work meeting he stopped me and asked me on a date. I said yes of course and that night we hung out and it went great he was shy and nervous which made me like him more and I was my bubbly self. Then at the end of the date I could tell he wanted to kiss me and I told him that he could just do it.  And we kissed and it was great.  We had a connection that was unreal. I couldn't believe it the guy I had such an crush in was now someone I could date. So we did we went on a couple of dates and he told me that he felt " strongly" for me on our third date. We became exclusive shortly after. And that when everything changed. We at first slowly then all at once started to hate being with each other. I felt Lonley sitting accross from him at the dinner table and felt unwanted. I imagined just leaving him and never speaking to him again, but then the thoughts of how much I adored him would pop into my head. And before I leave this part out he was also my first. So that accounts for something as well. One day while he was using my phone, he left his Facebook open and i could see that he was talking to other girls about wanting to hang out. I took its him trying to leave me and me wanting an excuse to leave him that I didn't feel bad for. So we broke up only after about three months of dating. Now he wants to work on things and I'm just not sure if what I want. I do not feel the same way for him as I once did and I am unsure if that will ever comeback. Also he has two kids by two different women. His Facebook page still says he is involved with one of them and he speaks mostly Spanish and me only English. I need advice on what my next move should be because I have no idea.