This compound subject, therefore, requires a singular verb to agree with it. SUBJECT-VERB RULE #2 Two or more SINGULAR subjects joined by or (or nor) act as a singular compound subject and, therefore, take a singular verb to agree.
For example, You can't help but see how he feels about her; he wears his heart on his sleeve. Shakespeare had it in Othello (1:1): But I will wear my heart upon my sleeve for daws to peck at. People who wear their heart on their sleeve express their emotions freely and openly, for all to see.
wear heart on sleeve; wear heart on sleeve; wear heart on sleeve; wear her fingers to the bone; wear her to a frazzle; wear him to a frazzle; wear his fingers to the bone; wear in; Wear leveling; Wear leveling; Wear leveling; Wear levelling; wear me to a frazzle; wear more than one hat; wear motley; wear my fingers to the bone; Wear of Materials; wear off; wear off; wear off; wear off; wear off; wear off; wear off ) wear on; wear on; wear on; wear on sleeve