PLEASE HELP, I'LL ANSWER YOURS IF YOU ANSWER MINE!?

Ok so my friend's older sis (shes 22 im 12) was chatting w/ me & she said my bf said that he also likes this other girl. I confronted him about it & he said "No, I like you & only you. You're my Yoko Ono to my John Lennon & you're my snooks, U know what, my next wallpost is for u" He also explained why he told his friend he liked that girl. It was awhile ago, right before he liked me & he only said it to get his friend off his back, & he said hes never liked her more than a friend.We talked for an hour & a half on the phone & during that he was talking to my friends sis & he was talking to her on fb chat & without stuttering or having to think he was saying what he was typing out loud & he said "I never have & don't like her more than a friend." Do u think hes lying or telling the truth?!