update!!!!!!!!!!!!!!

Okay well thanks for all the replies, I thought I should update, although I dont know if anyone will see this.
Things have gotten a little better, we have been able to make love quite a few times now, but there are still problems with him losing erection. It seems he cannot finish inside of me, he either goes soft or it just goes on too long and I get to where I cant go anymore (too much friction/become irritated). Its very frustrating, because while he can definately get an erection now, he loses it very easily. Talking, the tv, changing positions, putting the condom on, and he just loses it. We were doing it last night and he was getting tired (long day and we had gone on a two hour workout earlier). I dont think its a physical thing, maybe but it seems very mental to me, especially because of how if he gets distracted its just gone (this has never happened to me before, usually with men I could go over my grocery list during sex and they would barely be listening). I have been trying to keep the focus sexual and not talk during it (bad habit of mine) and it kinda helps, but Id like to be able to change positions and stuff. Do you think its an issue of stamina too? He is a bit-just a lil-overweight and not that physically fit although its nothing terrible. We have been walking once or twice a week, going out and doing things such as going to the forest and hiking, etc. Plus sex in itself is a good workout. He was not very active before me I dont think.
I just want this problem to be gone, but the fact that it is slowly getting better is giving me some hope.