How to get back into dating in todays era? Only dated once

I have only dated once (from age 19 to 24), and as a teenager growing up I wasn't like any of my guy friends who were into dating/girls/smoking looking cool stuff. Now I'm 27 and I don't know where to start from. I have only had been intimate with one girl my entire life and that was my ex, so I do get attached to people quick. I went out on a date twice.......the first one said that I'm not experienced enough and the second one had attachment issues and was just looking for something short term.
Please tell me what to do if anyone had been in the same position as me. I want to date someone so I can eventually marry because my parents are getting old and I don't know what to do.