Why not doing it with your girlfriend?

Me too,but my mom gets angry when I touch her feet,she would get angry when I try to rub her foot,when she isn't there I would go and lick her high heels from the inside

Yes it is,I have a foot fetish too,It's normal just try to tell him to take off your shoes when you come back then tell him if he would like to give you a foot rub,believe me he will be very glad