I have to say I totally agree with the comments on here, surely your finance's priorities should be making you happy, not his pals!
From personal experience; my sister recently got married, she had seven bridesmaids. By the day of the wedding she regretted picking most of them, but she didn't let that ruin her day.
It wouldn't bother me whether I had any bridesmaids or not, the day should be about the bride & groom and not making other people happy. Someone once told me, If a bride can't be selfish on her wedding day, when can she be? I agree Lol. Are there any children in the family that are attending? Couldn't you just have a flower girl, that wouldn't be so awkward?
You only get married once, right? So go with your heart.