*back in(to) circulation
1. Fig. back enjoying one's social contacts; back continuing to make new friends and develop a social life. (*Typically: be ~; get ~.) After her illness, Kristine looked forward to getting back into circulation. I want to get back in circulation and have some fun.
2. Fig. becoming available for dating again. (*Typically: be ~; get ~.) Now that Fred and Amy are through, Amy is getting back into circulation. Now that you're divorced, are you going to get back into circulation?