How to stay erected so you can "keep going" in sex?

[mooster]

So me (22) and my gf only see each other once a week so we want to get the best of it. Lately my gf was hoping I can do a second round but I find it kind of difficult. I would have so much desire for her on the first time but after I cum I lost all sex drive. Sometimes after I cum I was still has the erection but as I pull out and try to change condom I lost it.
So what can me, or us can do?

please don't tell me to take drug, i don't wanna do that.. yet

 

[mkjf3010]

Not possible

 

[Hermes]

You enter the refractory period -- that is normal. Wait for a couple of hours and it will be ready again.

Hermes

 

[mikossss]

might wanna take a break in between. or quit being so self consious.

 

[broken_xox_dreams]

masterbate. if you only see eachother once a week, masterbate everyother day of the week. wearing a condom while doing so, helps as well.