I hate my body, but my boyfriend loves the beach, what should I do?

Hello there I am a 22 year old female and have always been small my whole life, but recently I had jaw surgery and lost a ton of weight. After I was able to eat solid foods my body started to pack it on in weird places because it thinks that I am starving my self. My boyfriend says I am beautiful but I was small when he met me and fell in love with me and he said I was beautiful then. I gained about 50 pounds since we met 4 years ago. He always wants to go to the beach but there are so many gorgeous girls there showing off their goods, and I am jealous but I don't let it show but I don't want him to think I am a bummer either. What should I do?And I have tried talking to him but he thinks I'm being ridiculous
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Ridiculous** Pair**
I hate my body, but my boyfriend loves the beach, what should I do?
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