A Secret Revealed in Private

I've been taking care of my recently divorced friend who's been struggling a lot lately. We started off as friends helping each other through tough times, but one night when he was particularly vulnerable and I had just finished reading about DDLG online for research on how to better support him emotionally... things got out of hand. I ended up comforting him in ways that were far from platonic, touching, talking sweetly like a parent would with their child, even dressing him up a little bit when he was receptive and desperate for affection. It felt wrong at the time and now it's eating away at me.