where should i begin.

i have a boyfriend .we met on the internet. we became friends he wanted more but i did not trust him because i was looking for a committed relationship and he seemed like looking for something else .he was seeing someone and i met someone after we met. it did not worked for both of us.
one day when were together he made a phone call with her ex girlfriend they fighted .i adviced him to be honest with her and do whatever to get her back if he loves her.he ended it.
than after a while i decided to give us a chance .i was looking for a committed relationship but what the hell i liked him. than we start dating. we were in different cities but we become at the same city on the weekends. we were dating only weekends about like 2 3 hours.. after we start dating he seemed very little concerned about me. we weren't speaking on the phone regularly. this behaviours starts annoying me. i wanted to have nonstop communication for example speaking on the phone once a day or text messaging. he confirmed but he could not chance. this was not annoying me when we were friends but when we become lovers i wished to have a real contact.
i was also wondering about his ex girlfriend. i become suspicious because of his his fb account.there were some new friends in stupid nicknames. we weren't dating regulary and i knew very little about him and never met any of his friends.we were dating like 6 months i asked him if he was seeing someone else.and he denied. i was so suspicious had some feelings. we were so far.he was not really seemed paying attention on me. i asked he told me he loves me. i tried to broke up sometimes because of his behaviours but he never responded and accepted my decision. after a while i contacted a girl that he just added as a friend on facebook. and the girl told me that they met on the internet just like us and she told me that he really wanted to meet but she did not accept ect. than of course i told him this and broke up again and delete him on the fb ect. he did not accept that.he lied about he knew her .and i did not believe him but i thought it was one time mistake and forgived him. we become lovers again. but of course there was trust issues. he did not respond my friendship on fabebook. i tought he was hiding something again and does not want me to see. whatever when we met i asked him about why he was keeping me at a distance.his answers did not satisfied me. his phone was always muted and i decided to look at it. i looked and did not see anything bad.i felt really relaxed.than it vibrated and i looked again and i saw a skype message from a girl that says " hi can you send a video call".it was morning and weekend . so at the end. i started a fight with him. he denied of course. he told me it was his brothers ect. i dont believe him anymore...