1. Sexually faithful
   "she was true to her significant other"

See also: faithful

• Flagyl
• flail
• flair
• flak
• flak catcher
• flak jacket
• flake
• flake off
• flake out
• flakey
• flakiness
• flaky
• flam
• flambeau
• flamboyance
• flamboyant
• flamboyant tree
• flamboyantly
• flambé
• flame
• flame bush
• flame cell
• flame durrajong
• flame nettle
• flame pea