She'll Have a Double

An Ask E. Jean Classic:

Dear E. Jean: 

After years of vigorous proselytizing on the horrors of infidelity I suddenly find myself at twenty-seven, cheating on the man I love dearly with one of our good friends.

It's the best sex I've ever had. The way our bodies fit is exquisite. He's larger and stronger than I am, and has exactly the attitude I want in a lover — aggressive, passionate, admiring, uninhibited. My boyfriend is sadly inadequate. Though he's very handsome, he's not my body type. He's a playful lover, but I'm more turned on by sweaty, wanton lust. And though most women would find his devotion to cunnilingus perfect, I don't find it inherently exciting.

The friend loves to have intercourse with me, whereas my boyfriend can't make love for more than a minute without climaxing. And he's actually a little too small to thrill me. But I have no interest in quitting the relationship I'm in. Especially not for our friend. He's a selfish, insensitive alcoholic who has cheated on girlfr…