Some men even hide under their mask being "nice guys" wherein deep inside they just want to get in your pants. For me, those nice guys are actually the most possessive ones. I personally get turned off when a guy tells me that I'm beautiful. Either that compliment is too old, insincere, and even a sign that he wants to kiss my ass. Like, bitch I know I'm beautiful, shut up!
I also hate those men who claim themselves to be "highly sensitive ones", those that claim to care about a woman's emotions and all that shit. Some of the people will tell me that a good guy is hard to find. Bitch STFU! That tactic is sooo overused, like I can love myself, I don't need a guy who claims to care about my emotions. The only thing he needs to worry about is that if he's worthy of my respect. Truth is, these type of guys are actually the most narcissistic ones.
Most guys who act like this are probably those introverted nerds why are too shy to even make a move or don't know how about women.
I know deep down that I'm worthy of being pursued and I only date alpha males who are confident enough to ask me out. Besides, as a strong extraverted woman, how am I going to date a boy who's too insecure to even look at me. I'll probably be dating a kid rather than a grown ass man when I give them a chance.
You hit the nail on the head. You know deep down you're worth this or that. You normally know this because life and experience made it clear to you.
For guys? Ever seen that one dude who is wearing the same shirt 150 days a year? Some girl probably told him he looks nice in it and that was his only received compliment the last two years. Guys do not get the affirmation you imagine. Of course if you never get positihe reinforcement you will be insecure.
As for why they would still be insecure in a relationship with you? It could just be who they are. It is also very likely that you do not instill that sense of security. To me my past relationships have been a safe harbour. Challenging and stimulating, sure. But also a place I know I can rest my head and rely on if I ever need to. Because I have been shown I can be safe I never felt insecure. We're all a result of what we experience. Your partner being insecure is as likely to be your doing as theirs.