Just because she's not cumming as fast as she used to may not be because she's not enjoying it. If you've 'mastered' all of her pleasures, she may want it to last, instead of a quick-and-all-over. Don't fret over it...It's sounds like you doing a good job!

Might be that the samo ol same ol isnt working as good as it used to. Maybe try and spice things up. Its fun to experiense new things with your lover. Also take longer in foreplay thats not necisarilly touching the genitals. Full body massages with oil really are fun. Teasing builds anticipation. It doesnt have to be overly kinky where youare too scared to try it . But you could try touching other places, like her butt. Some people like that b/c it feels so "naughty"
other things could be a factor too. Has she started taking birth control pils? That could do it.

She just stopped taking birth control a week ago...


And did you read my post? Lol we do something new each time. It never gets boring! :d

Sounds like it might be the birth control to me. I wouldnt worry about it too much though. Sounds like you guys are having fun!