Shingleback Skink

so my boyfriend and i just started dating and i had this really close guy friend who i had a casual thing with a bit before. well the guy friend and i had wanted to go see this movie (friends with benefits) and we finally had the chance to but i had just gotten home from being gone and i wanted some time to get some stuff done so we went to a late movie. well my semi boyfriend (we werent official just yet) asked what i was doing so i told a half truth (which i guessss you could say is a half lie?) and said i was doing chores for a few hours (and i actually was) but i left the movie part out because i just knew he might think that something was going on between my guy friend and i when in actuality i had just told my guy friend that i was officially seeing someone (even though the boyfriend and i werent official then) and that i was happy we were still friends and thats all. sooo we saw the movie had a good ol friendly time. then karma comes and the boyfriend happened to see me at the theatres (small town i guess) and so i told him (because he pretty much dragged it out of me the next day when we were hanging out) and i feel like because of that, ive damaged our trust when i shouldve just told him i was going out with the guy friend and it was just a friend thing and he never has to worry about me and any other guy as long as were together. i think i know i care about my boyfriend because i think things over so much. my gf told me that today, she said that all of my worries and concerns with him just show how much i actually care. i think shes right. i like him a lot. so i hope i didnt ruin anything, ill be sure to tell him those things next time =)