How to know if a guy is just acting friendly or he actually likes you?

If you know me… if I’m going to give a high five… I’m going to do the right way ! Not weakly, but strongly haha… so a guy which is pretty good friends with me always likes to give me high fives every now and then. Well, yesterday, he came up to me and asked for one laughingly (he knows how I am)… so I did! But I hurt myself lol…I have to say- my hand was stinging & bright red! Jokingly, I accused him of hurting me and then he preceded to make me laugh by massaging my hand and “worrying” over me… sooooo was he being flirty or just friendly? I sometimes get mixed signals. Sorry for the weird story… just confused here haha!

How to know if a guy is just acting friendly or he actually likes you?
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