Am I crazy?!

So long story short:
I go to bed every night saying to myself that tomorrow is the day I finally start exercising to lose weight and be healthy.
When tomorrow comes around- all I want to do is eat and sleep 😩😩😩😩
I don't know what the hell is wrong with me but I literally go through this everyday!
Am I the only one? And please provide solutions if you have any.
Ps: my bf is less attractive to me since I started to gain weight, he says that's not true but when you go from having sex 2-3 times a week to once every 2 months something is definitely wrong 😏🤔