What do you guys think??

my Boyfriend and I dont live together he lives 2 hours from me I see him like 1 time a week and he is here visiting me for a few days and he always wants to go threw my phone so I Let him so I ask if I could see his phone and he won't let me... when we are not together we talk on kakao and he told me I was the only girl he talks to on there ans I was his only friend on there but when I looked at his friend list there were like 5 other girls on his friends list and I asked him do you talk to any of those girls and he laughed ...he has the password to my phone and and I him what his password was to his phone was and he won't let me know it I feel like he is up to something...what do you all think?