I’ve lost 60 lbs since May...

My high school sweetheart broke up with me back in May. We had been together for a little over three years. In March I got pregnant after us having tried for 8 months. But I lost it mid April, not long after our anniversary. The depression of the miscarriage added on to losing who I thought was the loml, caused lack of interest in food, people, and basically everything. The weight dropped off. And at 20-40 lbs in I felt great. But the more the weight that came off the more insecure I felt. I have more energy and people are always commenting on how good and how happy I look. I’m on a low key with my guy bsf of six years and I’ve never been happier. He makes me feel great about myself. But I still can’t help feeling insecure. And as I lost weight I lost some of my boobs, but the skin didn’t tighten up like it did on other parts of my body. I got my nipples pierced in October as an attempt to make me fall in love with my boobs again. But it hasn’t really worked completely. I love my nipple piercings but I still can’t stand that my boobs sag at 20. Is there anything I can do to help my boobs get perkier again? Or anyway to learn to love myself more?