Pakistani men not trusting other men

I've been talking to a guy that my female friends introduced me to. He works with one of my friends and is about 5 years older than me. They've been friends for less than a year and hang out quite a bit. He expressed interest in me to my friend and she did her magic. We had some interests in common so I started talking to him about a month ago and there is attraction but he seems a little weird sometimes. For one he has a problem with me being friends with my guy friend who I have known 10 years. This guy friend is a part of my friend group and all the other girls are friends with him as well. He also has a gf. But the guy I'm talking to keeps saying to "be careful" with my guy friend because I "don't know how men are". Guys are just waiting for a chance and other bs to try to get me to stop being friends with him. This guy friend is the only one he's met and knows about so he keeps bringing him up and not the other guy friends who I don't feel comfortable talking about or even introducing to him. It makes me wonder how does he view my female friend who introduced us because they're also apparently friends so does this mean he's waiting for a chance to get with her? He also keeps saying I don't know this or that because I'm so young like uncle you're only 5 years older than me and if I'm so young and immature why are trying to hit on me? There's other things as well but I'll stop here.

I know he's a weirdo and I'm not going to continue anything with him but I'm posting this to let my dear brothers know that please don't be that creep. Don't have double standards. If you're friends with girls but have a problem with your partner being friends with the opposite gender then you probably have a choor in your own heart.