<human>: I (26F) am feeling left out. I travel for work and figure that 3 weeks away per month is enough space for anyone, but my SO (25M) (of 1 year) has stopped inviting me over to his parents or out with his friends, even to the point of arranging parties the day before I arrive.
When I'm gone, there's rarely a conversation that Rick will start (via text) and many times my texts will be ignored.

Getting Rick to spend time with my family is extremely hard too. Once I came back early to find Rick getting ready to go out clubbing (with his sisters), and upon telling me about it instantly said that I'm not invited.
I would expect that Rick would want to spend time with me while I'm back.

We talked about it, but he just says that he doesn't want me to feel obligated to visit his parents and that the parties were easier to get people to attend on those dates (I returned on a Saturday afternoon).
I still feel left-out despite these explanations... am I over reacting?

I'm worried that our relationship is just about sex now and there are no real feelings on the other side. Is that wrong?

Any advice?

Rick is a fake name

Summarize the given text in a few sentences.
<bot>: I (26F) travel for work 3 weeks/month and SO (25M) is suddenly avoiding me going out with him and peers/family. I feel left out, is that wrong?