I think my girlfriend has had sixty-one boyfriends before me. She calls me her sixty second lover. ... Wait.

I think my girlfriend has had 61 lovers before me... Because she calls me her sixty second lover

I think my girlfriend has had sixty-one boyfriends before me, because she calls me her sixty-second lover.

My girlfriend told me I'm her 32nd lover Turns out what she really meant was I'm her thirty second lover