Hey there pal! Experienced bull from India! It's mainly in our tradition nd teachings that make our women shy to accept that they'd like to try another cock! it's just that you need to make.her believe you are TOTALLY Okay with the idea.
If the main problem is that she doesn't wanna try, then also I have a few ideas that have worked in the past
DM me on telegram @Venturesome3 if you're interested for further discussion