Well stop, guy. You're not a failure. You just need more experience, so use this opportunity for just that - to gain experience!

I think you need to find out where you stand with her.. why not plan a fun day for you two? Like a picnic at the park, goin for a walk/hike.. bike riding, etc. See how she reacts?

Don't assume you are the problem here.. she just got out of seeing someone, maybe it's got her throwed off.

Good luck. Please keep us posted.