I've been talking to a guy from another state. I am supposed to visit him soon, but his friend slid into my DMs. What should I do?

I have been talking to a guy (28 y/o) from a different state for few months (1/2 months) . He and I have good banter and talk. But he is always out with his friends, travelling. It seems to me that friends are a big part of his life and the reason for his divorce as well (always out with his friends and was never home). He has been asking me to visit him. But I have been a bit busy and I have not been able to visit him. I told him that I will come this September due to some own personal reasons. But lately our conversation has been a bit stale and it seems that he is not interested in the long distance conversation and would rather meet and talk. I am a bit upset but my hands are tied. I told myself when I visit his state on September that I will meet him at least once. Before he said he wanted to take me around his City and show me the mountains (Colorado), but now I doubt that will happen. But when the frequency of our conversation went gone down, one of his friends added me and messaged me. He and his friends are not friends on social media but I saw their group picture from their recent travel on his profile. I find it weird that his friend added me and messaged me when our frequency of conversation went down. I doubt he mentioned me to his friends and believe this to be a coincidence. What are your thoughts about it? What should I do since talking does not qualify to being serious? Any thoughts are welcomed.

I've been talking to a guy from another state. I am supposed to visit him soon, but his friend slid into my DMs. What should I do?
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