We love our partners. We really do. I mean, that’s why we promised not to canoodle with anyone else while we’re seeing each other. Talk about sacrifice! But there are only so many nights we can stand hanging out with our “couple friends” or organizing the garage. We don’t want to be one of those people who start dating someone only to morph into a two-person unit, while our single friends disappear one by one. Not only is that boring, it can be bad for your mental health and even your marriage.  To fight off co-dependence, there are things to do without your significant other now and then. Things you likely did when you were solo will make you feel good and, most likely, will improve your couple time, too. Women who’ve lost their joy in marriage often give up these 18 ‘single girl’ habits too soon: 1. Pizza and Netflix with your BFF There’s nothing better than discussing the merits of contemporary TV over greasy food and wine. 2. Attending book events SibRapid via Shutterstock While he …