gettingmixedsignals

I don't know the right thing to do. My boyfriend seems to really enjoy spending weekends with me and we have done so for several months. I mentioned to him last weekend that I would enjoy a call instead of test every now and then. He eventually did give me a call and said we can to this every now and then. OK? But this is what has me wondering.... It's my turn to see him this weekend at his place...we live about an hour apart. But he is going to a party w/o me in the afternoon on Saturday (I was not invited since I didn't know the ppl and they sent out invites when we were only dating 2 months or so and his adult kids will be there and I haven't met them yet). That is bad enough. BUT then he texts me today to tell me the next day I'm there (Sunday) he made arrangements for himself at 10 am to get his personal trainer for an hour. As an afterthought, he texted and asked if I was interested in having a session with the same trainer after him. EXCUSE ME but...I'll be sitting around for him a few hours Saturday afternoon while he goes to the party and then he wants me to either leave (I assume) or wait on him another hour the next morning. We usually leave late morning from either other's home on Sunday. When he visits, it's usually on late Friday night and when I'm going to him I usually come on Saturday but he said I was welcome to come on Friday (I don't work Friday's but he does from his home). Am I misinterpreting this but it sure seems like he is treating me quite casually and as an "option"?