<human>: Hello guys, as the title says, Im going on a first date with a guy who I have met through OKCupid. We have talked for nearly 5 months now, and he suggested meeting before christmas (Lets call him Bob). I had exams early January, so wanted to wait till after, he thought that was a great idea, and actively helped me study, and gave examples from his PhD with how to answer the essay type questions. 

We have a date this Wednesday evening after he finishes work. 

A little background about me: Came out of a long term relationships last January, and gave myself time to fully get over the relationships which I realised was emotionally abusive. Now, I also suffered (and am now 'physically' recovered from) and eating disorder. I have told Bob about this, and he asked respectful questions about it, with my permission(?). 

He was incredibly sweet, and it hasn't seemed to put him off. He comments on how beautiful my selfies are, but Im afraid when we first meet, my anxiety over my body weight will become too much of a stressor for him. 

I would love some advice on how to not let this anxiety take over the date. I usually would sit with my jacket over my lap, covering my stomach when sitting, yet he plans to take us to a fancy restaurant, and I wouldn't want to seem like Im getting ready to get up and run! 

Also, this is my first date in over 5 years, and Im not quite sure how a, for lack of a better word, 'adult' date works?

If you need anymore information, please don't hesitate to ask! Thank you :)
(Sorry for formatting, first post on here)

Can you summarize the given text in a few sentences?
<bot>: Going on first date in 5 years, don't know how to stop my body anxiety from ruining our date Also tips on what to expect/how to act on a date would be appreciated, thank you!