Dating younger men

I recently started seeing someone younger than me. I thought he was 20 but he’s 19 and I’m 23. I’ve never felt the way that I have for anyone and I’m not used to being loved and he gives me everything I need emotionally. I talked to my friend about it and she was supportive but then her fiancé went off judging me saying what do I think I’m doing. A couple months ago I was seeing someone who was 30 and had their “life somewhat together” but he didn’t make me feel happy or fulfilled. I felt like I was forcing something w the 30 year old. But with the 19 year old it comes so natural. My friends fiancé went off saying it was stupid of me to leave the 30 year old and a bunch of other stuff bringing me down and making me reevaluate my life lol. Open to anyone’s feedback or words or encouragement lol.