Is going on tinder Haram?

In Islam, the simple rule is that anything that leads to haram is haram; so if adultery/forniation is haram then any action that can lead to it is haram. People who use tinder are not there looking to marry people who practice the deen; its known as a hook up app.

Do guys get turned on by breastfeeding?

Some men relish the spray from milk letdown on their bodies, and some couples use the milk to rub their bodies against each other, leading to sexual ecstasy. In summary, there are many responses or combinations of responses of a couple to the addition of lactation to their sexual life.