I was on celexa for 10 years. It worked great for my depression and anxiety. I too had the same delay issue with sex. However the last 2 years I started also getting ED. I ended up relapsing and switching meds, now on wellbutrin. However 5 years after celexa I still have ED and many docs can't figure it out. I'm 42. The ED was one reasons of my divorce of a 16 year marriage. Long story short, if you don't need to be on meds, Don't be! There can be serious side effects that might be permanent.
However in my case, I can't function without them so sexual side effect is just the high cost of being able to live.