Feeling hurt .

ANgie • I`m 20. Cambodian . Love food!!
I have been with my SO for a year. I care very much for him. The thing is we are miles away from each other but I trust him with all my heart. But things start to change about him , when I ask him if he was talking to any other girls he would say nooooooo then says he tired . Or he has a headache . I don't know what to feel , I really want us to work because I care so Much about him . What should I do , continue to pretend It doesn't bother me , or talk to him about what I'm feeling inside. Advice pls . I don't want to lose him as a friend /bf.