Getting up round the clock to feed a baby, dealing with perhaps pain, let-down and leaking, occasional engorgement, being the only person available to meet that particular need of your infant no matter how much you just need a break. No, not the least sexually arousing. In fact, while breastfeeding, the last thing I wanted was my husband anywhere near my breasts. Do some women feel some physical arousal. I've heard that can be so, but that doesn't make breastfeeding a sexual act. Never personally had that happen though.