I've dated a lot. In fact, I've just got out of a fairytale relationship which along with some other stuff led me to this site. Through it I've still had depression and been suicidal, but still made some of the best and worst memories of my life.
Having dated gives you some confidence, but it doesn't completely flip things or make life feel worth it because you've got a man. In fact depression is challenging to manage in a relationship. It feels like you're burdening them with being sad all the time, which can lead you to pretend to be happy which is exhausting and worsens depression.
What's more important than having a relationship with someone else, is building a healthy relationship with yourself. Work on improving yourself and being the badass sexy woman person you want to be. Sure you may be suicidal, but you can also learn to be a great baker, or dancer, or love reading or know every single song in the chart, or play a great game of chess. Build your self esteem, build your personality and character. It's a very attractive quality to have and it makes you a better person. If you can't do anything, clean. Healthy sight leads to a slightly healthier mind.