What does strings attached in a relationship mean?

Fundamentally, a no strings attached relationship is one in which two people carry on a purely physical connection with one another; theres no emotional connection between them.

What does it mean when someone says strings attached?

said to mean that an offer has unpleasant conditions which must be accepted as part of the offer, or that the person making it expects something in return.

What does too many strings attached mean?

One or more conditions, restrictions, obligations, or arrangements that must be met for one to attain something that they desire. The Senate is willing to allow the bill to pass, but you can be sure that the final draft will have several strings attached.