Most Helpful Guy
He picked you anyway. Stop telling yourself you're too fat for him and don't be. Don't let the status quo get you down, let the possibility of being better excite you. That's motivation.
"Treat yourself like someone you are responsible for helping". A wise man once said that. You don't help people by beating them down and looking at how bad something is. You have to also show them how good something could be.
Most Helpful Girl
How can you tell him what? That you're "too fat" for him? Because obviously you aren't, he picked you.
As for sticking to a plan, using a food tracking app helped me lose weight.