Is this jealousy or is she trying to be helpful

So, two weeks ago i started seeing this guys and things have been going well. he’s taken me out on two days so far, we’ve been talking and getting to know each other (obviously moving very slow, i don’t want to rush into a relationship) anyway, my friend who had introduced me to this guy, her boyfriend his cousins with him. the downside is that she has been berating me about seeing him, ever since i started going out on dates with him. keep in mind, i’m an adult i’m in my twenties and he is 7 years older than me. the age gap doesn’t really bother me, because i feel like i have a lot more maturity than a lot of women my age but she says things like “i don’t know if you should keep seeing him” and “i don’t think someone that age should be in your life or is something you need in life” i honestly think this lies deeper than her looking out for me and could potentially be rooted upon jealousy. i honestly am fed up with it, because i have a right to see whoever i want and get to know someone. i’ve tried to look into the perspective of she is trying to look out for me, but i know it’s deeper than that…

any thoughts would help