heartthrob

US /ˈhɑːrt.θrɑːb/
UK /ˈhɑːrt.θrɑːb/
"heartthrob" picture
1.

a famous singer or actor, typically a man, who is regarded as being very attractive by a large number of fans

:
The young actor became an instant heartthrob after his role in the romantic comedy.
He was a heartthrob in the 1980s, with posters all over teenage girls' walls.