Relationship

I've been dating my boyfriend for 3 years now. I've gained a few pounds & I have a pudge for a stomach but not much . So my boyfriend tells me I need to loose my stomach , then I'll be on point. Now im feeling very insecure about my weight. Like is that something you should be telling somebody ? I thought it didn't matter if you gained a little weight , as long as the love is still the same. Honestly I feel some type of way about it.