Reconnect with Casual Acquaintance
Hi acquaintance,
You may not remember me but we met some time ago.
I was thinking of you the other day because I saw something that reminded me of you, and I remembered you had an interest in an activity.
I hope all has been well; I've been busy with work and am just sitting down to catch up on some correspondence.
If you're going to be around, I'd love to meet up with you.
Let me know how your schedule is shaping up. By the way, I've changed my cell number, so please call or text me at 555-555-5555. You can also find me on IM/Facebook/Twitter as my username.
Cheers,Your friend