Golf Widows

Every weekend our respective husband's play golf.
And every weekend myself and Molly one of our neighbours and I, have lesbian sex.
It started five months ago when our husband's stayed overnight playing a supposedly special 'Ryder cup' course in Wales.
We shared a couple of bottles of wine, then I shared her eight inch dildo.
Licking her sex was my first ever taste of pussy and I found I loved it.
The same as having Molly tongue, finger and dildo fuck my quim.
The following week the minute our husband's drove off to play locally, we were in a sixty nine burying our faces in each others pussies.
The sex with Molly is so sensual and unlike being fucked by my husband, sex with her lasts more than five minutes.
However just recently she's told me her husband knows we're having sex and also said he's well endowed.
She didn't say it outright, but Molly's hinted that her husband would like to fuck me, with her present.
I'm tempted, but Id not feel right if I didn't tell my husband now Molly's husband knows. But how do you even start that conversation with your husband.