keys

I am in my late twenties, and not that experienced sexually. I recently started seeing a girl on a FWB basis. The sex is good – we're both enjoying it and all – but I've not been able to cum, either during sex or afterwards when she's jerking me off or blowing me. I've no problem staying hard, I can stay hard for as long as she needs.

Now, in general ejaculating isn't a problem. As I said, I don't have an expansive sexual history, so there's been quite a bit of fapping in the past and I have no trouble cumming to porn. What's bothering me is why I can 'complete' to porn but not when there's an actual real-life girl pounding and sucking away. Actually, I even took over the manual application last time but still nothing. (I think I could have probably cum if I watched some porn over her shoulder though. That can't be healthy, right?)

Any advice/tricks/methods?