Michael,
Let's focus for a moment on the word, "okay". If you want to write for yourself, family, and friends, anything is okay; there are no rules/guidelines/perimeters; however, if you are writing for the market, like it or not, there are...mostly anything overused, whether it's rhyme mates or phrases. If you should hear anything overused on the radio, it's most likely written by the artist or an associate, who can easily get by bending and breaking any rule. Outside writers have to actually write better songs to get past the gatekeepers.

Rule of thumb: if you've heard it before, try not to use it.

Artists, record labels, and publishers are all trying to find fresh ways of saying common things.

I only use perfect rhymes when there is nothing else that sounds as good.

“I usually start with a title or maybe a little rhyme or phrase.” - Harlan Howard

Co-writing = Compromise!