Am i being used as a rebound?

I've been in love with this guy for 3 yrs now.We were never together, strange things happened, other obsessed girl was around who was doing anything to be with him even they started as fbuddies what she suggested. Anyway he fell in love with her and they were together for 2 yrs. While still with her he moved to another country, His gf cheated on him, he told me the story more or less. He was badly hurt and stopped trusting people. He is insecure even more than he used to be as I can see.But he doesnt care about that other girl, he said she probably did him a favour as deep down he knew she wasnt a good person. just never wanted to admit it to himself...I found him online and concidence made I was going for hols soon near the place he lives..So we met, spent a lovely time together and night. I wasnt going to contact him after that but he started to text me and invited me for a few days to his place in a month..After 2 weeks texting I booked the ticket..He texts me every second or third day, saying how his day went how he feels, asks me how I feel. He makes me laugh by saying jokes etc etc. I told him about my anxiety and he said that there is nothing wrong with felling like that and he is looking forward when I come over and have a good time here and I must feel in his house like in my own..The problem is he is going for 3 months for hols to Oz which concerns me as well. Am I being used as a rebound? Or is he into me? Cant deal with my feelings towards him.. Cant believe he could be such an even to use me to amend his broken heart.Please help