Oh please!
If you're going away on holiday with someone, and sleeping in the same room, and having sex - you should at least be able to say you have a nail fungal infection.
And hint. I'd like to know if it's contagious. Like a verrucca.
The fresh air will probably do your toe nail good.
If I was a new partner, I'd like to know your standards of hygiene were good.
Do you brush your teeth, wash your clothes, wash down the kitchen counters or equivalent?
If you hide your fungal infection, people will only worry about what else you're hiding.
If you say, "Listen, I'm embarassed my foot looks hideous."
I'd probably only worry if you might knowingly have infected me with something. Otherwise I'd support you.
But it's spread right? From one nail to another? Does that mean it might have spread to your sexual partner?