Firstly, dont do the same thing every night. You will get bored of it VERY quickly.
Some ideas: See if there is a Chesed organization in your area that needs helping stuffing envelopes or doing something like that. You are doing it together, gives you something to do, and doing Chesed all together.
Make a serious attempt to set up some of your single friends. Not just when it comes up in conversation.
Find or come up with a new common hobby.