2-Year Relationship

I’ve been with my boyfriend for 2 years and I truly love him so so much but recently an ex from 7 years ago has been texting me and it’s been nonstop texting, no flirting but just laughs here and there it’s been nice to talk to him but I can’t help but feel bad because there where feelings before and I don’t know if those feelings will come back. I don’t want to hurt my current boyfriend but not sure what to do...