The unknown “love”

I need to vent about my life story an virtual experience I had about 4 years straight with a man I met in person in Italy on my vacation he’s a friend of my dads too. Back in 2011 I was only 15 years old and he was 30 one day I requested him on Facebook with the intentions of being his friend and nothing more. He would contact me and ask me if I was going to go to his live music (he’s a guitarist) and I replied “no it’s my moms birthday” and he was devastated about it which confused me a lot. So the last night I’m there i went to his live music with my family I was sitting on a bench in front of him facing backwards and I turned around to look at him and he constantly staring at me lifting his head up while playing his guitar then we decided to leave because it was getting late and I didn’t say goodbye to him and he wrote me a sad long message on FaceBook asking where am I and if I’m on the plane already and he wanted to say bye all that I asked him “do you like me” and he’s like I do but more then a friend even though our age difference is huge it will always remain the same” A year after I moved on dating other guys he never said anything about it but we talked anyway and he kept saying he wanted to get to know me better in person before we become anything. So I agreed and then he would give me these confusing signs one day he was okay and one day he switched being distant acting like he barely knew me all long. When we webcamed he seemed honest and told me I’m very beautiful and asked me to stand up and turn around. The last year I saw him he came to America to see me and I went to go see him at a hotel with my family as I walked away to get in the car I turned around and he blew me a kiss. Today I am married with a one year old and I don’t even know if it’s a right thing ask him if this story was ever true? Do I really need closure? I can’t stop thinking about it my dreams won’t let me alone knowing the damn truth. Any advice?