Lingerie

So I’m thinking of buying sexy lingerie for the first time ever, I’ve been with my boyfriend for 8 years now and we have a 4 year old son. He loves seeing me naked but I don’t understand why... he’s so good looking and I’m so unattractive. I’m covered in stretch marks, I have rolls on top of rolls and literally everything on me is flappy as hell! He’s been hinting for a while that he’d love to see me in lingerie but I’ve never had the confidence to buy it. I really want to, but I have no idea how it’s going to look with my flabby belly 😩 what if it turns him off?? I’d be sooo embarrassed! Do I just go for it and hope for the best? 😩