Is AUTHOR wrong in the post ? POST : I'm a 29 year old guy, and my friend, let's call her bestie, is a 30 year old girl.

We have a mutual friend who is borderline neckbeard/nice guy, has a crush on bestie, and is extremely creepy around her, to the point where he sits beside her, rubs her thigh, puts his head on her shoulder, invites her home for drinks at night etc. The thing is that she's happily engaged, which she has said many times.

Last saturday we had a housewarming party for me, and both attended. Creepy friend did like he always does, and bestie was extremely uncomfortable but was otherwise nice to him, laughed and talked. More and more as the night progressed she turned to me to get away from him, which worked.

Anyways, to the main point. Back on monday, or if it was tuesday, she posted a screenshot of him texting her about how nice it was to see her again and that she missed him. We both laughed about it, but this is where things apparently turned sour;

I wrote "I hope you don't think of me as shitty for saying but, but I kind of think you kind of enable his behaviour. That Creepy friend is EXTREMELY slow in getting hints, and that she needs to give him an absolute verbal asswhooping, so that he understands, and finally stops. As long as you don't make your point absolutely 110% clear that you don't like him romantically, he won't stop, because he's slow.".

I thought things were alright, as all she said was "I thought he'd understand with my ring on my finger and all", and I didn't hear anything more... until about half an hour ago.

She wrote that she wasn't mad, but that she was flabbergasted and disappointed that I had written that to her.

I immediately felt shame, and apologised and that I had no intention of it sounding like I blamed her, just that I wanted to fix the awkwardness between them, and giving my point of view as to how to fix it.

We quickly made up and things are good again, but it still got me thinking. AITA?

I am in no way blaming my actions on this, but it's still important to know. I have mild Aspergers, which makes it sometime that stuff I say or write sometimes doesn't get interpreted the way I intend it t, and this is what happened here. 

What I thought was helpful advice, as I want bestie to be comfortable around creepy, I just said what I thought would help.

I have no problem being the asshole, as I felt ashamed, and I apologised profoundly, but at the same time I want to hear other people's perspective as to WHY I would be the asshole, WHY what I said was interpreted as a rude thing to say, and how I should think about it in the future so I don't repeat it. 

Like I told bestie, I would neve rever intentionally hurt her, but that I'm struggling socially every day and I'm learning new social rules every day and that I'm willing to learn from my mistakes as I always aim to be the most kind-hearted person I can be. 