I’m not attracted to my girlfriend, should I break up with her?

My girlfriend and I been together for 2 years. When I first met her she was small and petite (which is what I’m attracted to) over the last 2 years she gained so much weight. When we first met she was around 110 and now she’s about 150. She’s 5”2 so she’s very short as well. She now has stretch marks and a tummy. I’m just not physically attracted to her. It’s so bad to where it’s hard for me to kiss her and be affectionate. I love her but I don’t know what to do. Should I bring up the gym to her? Should I break up with her? Help please
I’m not attracted to my girlfriend, should I break up with her?
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