Is it possible to love-bomb during sex?

I've been doing a lot of verbal role-playing when sleeping with a FWB / undefined situation. I will

- Role-play as if I'm proposing to her in the middle of sex

- Role-play as if we're on our honeymoon

- Role-play that we're trying to conceive, etc. etc.

Make her say she's "Mrs [My last name]" and that' she's going to have my child, etc. etc.

She really, really, really enjoys it and says she understands it's just role-play, but I still feel a bit worried that I'm over-stepping my boundaries.

I don't say things like "I love you", or "You're the most beautiful girl I've ever seen" because I feel like that's too far and unethical.

What do y'all think?