I’m guessing this is at work?
Been there very recently/ still am there to some extent.
Focus on the positives of him asking how you are etc. He’s clearly a nice man that cared about you. Mine does that and while seeing his gorgeous hair and broad shoulders is hard, you can try flip it round.
Think of the worst thing about him visually. Awful nose, bad jeans, slightly messy beard, whatever. When you see him, focus on that negative. You need to train your brain to see him as a normal bloke that’s not hot, not this gorgeous Greek god being!
Do any of your friends know about you? Your friends may be helpful in mentioning things that are unattractive about him and why it never would have worked.
Focus on why it never would have worked, all his bad habits, shortfalls, why you weren’t a good match.
Find male attention elsewhere.
Find distractions in the environment that you’re both it. Chat to new people, find new routines, take on extra tasks. Make your tea elsewhere if you can.
If that helps you, bring your alter ego out around him, be totally Sasha Fierce. Don’t let him see you sad. Act like you’re living your best life. Look amazing. Chat to other people while he’s there, don’t converse with him if there are options.
Most importantly tho you both need to get on with it and be able to co-exist. Focus on it like co-parenting or something. It’s not an ideal situation but find a way for the greater good.
Mine and I are now almost ok. I watched him pick his nose the other day and just chuckled to myself like ‘me and HIM? Really?!’ We do say hi in a positive way and we do chat.
You are Beyoncé. No man is worth it, you get up, strut your stuff and move on. Believe that and fake it til you make it.