I have been with my boyfriend for about eight months. We are both in our mid-twenties and live together. We also work together, which may seem like a lot of time together to some people, however, we honestly always get together and at least I know I miss him when he is not around. He says the same about me. I have met his parents and vice versa. We have both talked about how this relationship is different compared to the previous ones we've been in.
I recently discovered that him and a couple of his girlfriends have endearing terms for each other. I feel positive that he hasn't cheated on me; however, I did mention it to him that I didn't care for the fact that they drunk text him at 3 am calling him endearing terms. We are on the same phone bill and I recently discovered that he constantly texts these three girls when I am not around. I recently went out of town and found out that he was texting two of them till about 4 a.m. Should I be concerned? I don't care if they talk, I just want some limits. Opinions? Advice?