"Forgetting boundaries" is not something you wanna be using in a sentence, man. I have a shitty memory too. Doesn't mean I conveniently "forget" anything my husband is specifically and validly uncomfortable about.

Don't listen to the shitty "advice" you're replying to. You opened up, were honest and respectful. Don't do the "playfully flirting" thing when she has made it clear all she wants is friendship.