A strange bedfellow of the opposite sex is a forecast of a change of residence; if you were in bed with someone of your own sex or with a friend, your happiness could be threatened by your own foolish actions.
Think it over! Seek advice.... The Complete Guide to Interpreting Your Dreams
The nipples provide access to sustenance through breast milk. However, they are also an erogenous zone. In a dream, they may relate to either or both of these fundamental meanings. You may be experiencing maternal instincts and a need to feel more cared for if they appear in a dream.
If you are dreaming of a man’s nipples, there still may be such a need being expressed to introduce a more feminine-principle approach to your experience.... Complete Dictionary of Dreams