<human>: Me(19) and my boyfriend(21) have been together for 8 months. We've been living together for 3 months and since then our relationship has definitely taken a big turn for the worst. I found out he was keeping naked pictures of his ex, when I confronted him about them, he lied about about having them but eventually fessed up and deleted them. He texts other girls all the time and used to call them 'love' and 'beautiful' all the time until I told him that bothered me, so he stopped doing that and he lied to me about texting different girls.

Our sex life has decreased and when we do have sex its not 'enjoyable'. Hes even told me he doesnt find it fun anymore. When I tell him something bothers me he really does try to make it better, like deleting the pictures and not calling girls 'beautiful' anymore but I still find myself having a hard time trusting him. I want to so badly because I love him and I want things to work with us but I get a sick feeling when he doesnt answer me about what hes talking about with his female friends or when he tells me hes going out with some of those friends. I dont want him to think Im being controlling or overbearing and I know I may be acting childish so I want help.

Can you condense the text into a few key points?
<bot>: Im having trouble trusting my boyfriend of 8 months after he lied about talking to other girls and lying about having naked pictures of his ex.