It's something I hear everyday.
"I wish I was more into sports" or "I wish I liked Chinese food."
These wishes are usually followed with, "Well, maybe if I was in a relationship I would." My response to that is, "why wait?" You don't need to wait for the right person to come along to introduce you to new activities. Now, I'm not saying you should take huge risks like go skiing down the black diamond hill with no prior experience whatsoever, but maybe join classes and take lessons and work towards achieving that goal.
Stop waiting. You don't need a relationship to find a new hobby or activity. If you've always wanted to get more into a sport, go to games and see if its something that you would like. The worst that could happen is that you're now out twenty-five dollars. If you've always wanted to get in touch with nature, get a group of friends together and go camping or hiking. You don't want to miss an opportunity or begin to live with regrets. And who knows? In the process of trying something new you might meet that person that you've been looking for or create a greater bond with your friends.
Aside from what society says, you don't need to be in a relationship to be happy. I'm not saying that I'm against relationships, because I'm not. Just don't let your relationship status stop you from living your life and finding new adventures and experiences.
However, just doing something only because your significant other does can create an unhealthy or toxic outlook and can change your identity. Find that balance, and if one can't be found then they may not be the right person for you. Don't change who you are to get someone to be with you. There's nothing wrong with trying new activities or hobbies, but don't lose who you are in the process.