So I’m in my 20’s firstly (not that it matters)

My partner was working away for 6 months, during that time I was exercising and eating right . I lost weight and felt attractive and good .

He has now been back since July and holy shit, I have definitely put on weight . We eat out all of the time, I’m always too tired to workout or I just want to spend time with him instead .

I genuinely feel sick with myself, I feel so heavy and disgusting.

Also when he was away I was doing really good with my savings , I was saving up for a butt lift but now I’m just second guessing getting it because maybe I should just workout properly so that I don’t have this feeling of being weak and heavy? I’m assuming getting bbl won’t fix this problem.

How do I just wake up one day and change my lifestyle? I seriously need help, Im so happy with my fiancé and I’m sick of being so negative and insecure around him.