I don't even understand my own emotions

So I've been helping my husband's friend to work through some difficult stuff lately. The guy is just more willing to open up to me than my husband. I've know this guy for like 5 years and would consider him my friend also. I love him to pieces like a brother...or so I thought. Recently he broke down crying and I held him in my arms giving him a shoulder to cry on and then we ended up cuddling (just cuddling nothing x rated) up while talking. Something feels a little different now for me. I don't even know how to explain it. Like he went from being the brother I always wanted to i don't know. I definitely feel some type of change in how strongly I love him. I don't think that I love him in a romantic type way but I'm not entirely sure. I'm totally confused as to what I'm even feeling towards this guy. Anyone got some advice on how I can sort my feelings out and figure out what is going on in my head? I'm terrified that I might be married and falling in love with another guy and I don't want that.

Edit: my husband is fully aware of the time I spent with his friend and what happened. He is completely okay with the cuddling. His friend always asks him if it's okay to hang out with me alone before we do(though after a few years you'd think he knows it's okay lol)