I've (25M) gained about 15 pounds of muscle and my (23F) girlfriend is threatening to dump me if I don't stop working out. Help.

I've talked about my fitness journey on chambers before, and I just want to start by saying that I was, well, fat. I was at the time 265 pounds and I gained that by eating and being too lazy to leave the house and even sit on the couch. I was in the bed 24/7 and started to gain weight and lost a job because of it. But in 2019 I found a job and my weight loss journey quickly started. I used to walk about 5 miles a night 5 nights a week, and weight train and I was able to lose over 100 pounds and I was able to keep it off and get a decent job, and even get a girlfriend. Now fast forward to today, my girlfriend says she wants to be the light person in the relationship and she is about 130 pounds. She says that she feels embarrassed to walk around with me with her arms stuck to my arms and she says she wants to end things if I keep working out, but I feel like everyone should be healthy and I don't want to stop being healthy and I don't want her to end things with me, what should I do?