Inauthentic Compassion and Friendship

When I meditate on compassion, afterwards there is a post-meditative effect of making me kinder, but usually in a way that doesn't benefit me. It makes me want to rekindle friendships that were not desirable in fear that the others would suffer, or give others time and attention in ways that somewhat disadvantage me. **How can this be dealt with?** **Is compassion even linked with being friends, or is it distinct; i.e. how can one be compassionate yet retain distance with others?**