new boyfriend, maybe I'm dumb

Okay. I've been out of relationships for years. I have had nothing. But bad past experiences. I know, I need to let the past go and focus on the now. But something is kind of making me fidget a bit and it is probably nothing. We are all girls here and we're here to listen and lift each other up. My boyfriend has quite a bit of female friends on his page. I notice that as they keep coming up on my "people you may know" thing. I'm not about to go questioning him or turn into a detective. A lot of the pics are all snap chat filter girls, kissy face, low cut shirts, etc. I'm not saying anything bad about the girls. I don't know them. I don't know who they are to him. Coworkers, high school friends. Am I over reacting from my exes constantly adding random women and openly commenting on photos and flipping out if I mentioned them in comments or posted photos of he and I together? I don't want to ruin something that may have great potential. I'm almost 31. I don't want games or me to go and be all "omg it's a girl. Nicole, you're not enough." I sound so dumb probably. He's done nothing to make me doubt. Jeez. Am I normal or just an idiot? :/