Surrogate boyfriend

[Greta]

For a female, a male friend who takes the place of [a boyfriend] when she is single. Generally speaking, a close male friend who is there emotionally, but is not receiving physical pleasure from [the relationship].

A close male [friend a] girl goes to for emotional support when she is single.

[Merna]

A male friend that a girl uses as her [pretend] boyfriend to [get away] from an annoying guy in a club or bar situation when she is single or her [significant other] is not present.