How small is he, (in inches?)
You might want to weight things out before you consider a long relationship with him if you thinks that his manhood is not large enough to do the job!It will save both "you and him a lot of heartache & pain in the future!
I am a man with only a 5.5 inch penis and I once married a girl who though that she will get adjected to my smaller manhood with time, but she did not because she was used to much larger penises and she began cheating on me and we ended up in divorce court!
My second marriage ended up likewise.
That's about all I have to say!!!!