Think I did the right thing?

So Im 18 and my ex is 17, we broke up becasue i felt we were going no where. In 6 months all we ever really did was sleep on a couch, or watch a movie at one of our houses. We went out maybe 3 times the entire time we were together, and all of which were with other people.
Our relationship came to an end it was because i felt like the passion had died, she rarely kissed me and spetm less and less time even chillin with me rather than texting other people wile we we next to eachother.
I know I still have feelings for her, but I really dont think that was going anywhere.
What do yall think?