My ex oldest son

Mia

Ok so not sure what to do my ex has a 16yr old son that has a crush on me I was with my ex for 15 yrs but I just met this son of his 2months ago . me and his dad are no longer on good terms but I still help out with his kids cause I've been there for most of the other children's lives so I'm not sure how to address the issue with this oldest son help!!!!