At first glance, I would take it as a compliment. But I also think it would depend on other things he has said too. If he says "you will always be my son" a lot, he might mean he will never see you as a woman. But I think that is reading too much into things, which is something i do alot. Don't be me. Honestly, I think it his way of saying I accept you. I imagine it his hard for most fathers to accept their son as their daughter. I'm not sure about my own. I look exactly like my mom and my sister and the aunts and cousins on my mom's side. I have had no shortage of that fact being pointed out. Also, my mom treated me like a girl most of my life. I was prolly the only cis male in my graduating class in college that received a big bouget of roses. Every woman I saw got them though. I felt like such a girl. So in that way for my dad I don't think it is a stretch. Your dad seems to love you lots so you're very lucky and so, yes, it is a compliment!