Why do i feel forced to hangout with friends or with girls?

i am 15 and ever since i turned 13 i have never feel like i want to be with friends.. whenever an oppurtunity occurs i overthink things and make excuses because i guess im not comfortable with the situation... like going to a girls house i barely know with good friends .. i feel like it will be awkward and wierd and ill make an excuse.. im not antisocial im very talkitive and im not selfconscious about my body but i think im just overthink it.. any idEas or options?