How to i reply to a guy asking to go on a date

I have a bf of 2 years!! I don't want to be rude and say no but he doesnt know i have a bf. I'm assuming its a date but it may be hanging as friends. We havent talked in a few years. Whats a polite but not overly excited way to say this. 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors