What are some signs that your (male) friends with benefits is catching feelings for you?

I got out of relationship earlier this year and embarked on a friends with benefits situation with a guy in my social circle. I made it clear that being that I just got out of a relationship, I work a demanding full time job, and in my final year of my master’s program, I’m not looking for anything serious.

Lately, he’s been doing things that may suggest that he is catching feelings, but perhaps I’m looking too far into things. I’ve done a friends with benefits situation in my mid-twenties and ended up catching unreciprocated feelings and I would hate for this guy to be on the receiving end of things.
What are some signs that your (male) friends with benefits is catching feelings for you?
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