Do i truly love my bf or is it just infatuation?

help me out!.. i have been seeing this guy, we both are together from last 6months. i liked him from start of our meet, two months later he kissed me n said he loved me. He had an gf n had a breakup before meeting me. he even told me abt her and said he will be always concerning for her. i agreed to this and continued relation. Later we got involved ually, i lost my virginity to him. Last month we had to stay far form each-other due to our summer project in diff cities. i did not meet him from last 1 month but were constantly in touch on phone, during one of conversation i asked him abt his ex's whereabouts he told me his ex had found a new guy, i was not happy to talk abt her but yes i started talk about her. then he flipped the topic and were talking about how eagerly he wants to meet me. Now i will be meeting him after 4days, i was soo excited to meet him, everything is planned, place timing etc but from last 2days looks like am confused, im not feeling like meeting him and also feeling guilty for getting physical with him. Don't know why all of sudden am feeling this way, he still loves me and me too but i have started thinking too much about my future. and for first time i avoided his call i felt like telling him this but later felt he will feel bad. Now im finding ways to cancel our meet Someone help me Im so confused.