Should I tell new partner about my STI?

I’m a 50-year old woman, recently single and I’ve started dating. I’ve used condoms, but somehow I have contracted HPV. 

How has it happened? I’ve just met someone and I think I should tell him, but worry it will ruin everything as he won’t want to sleep with me.

Human papilloma virus (HPV) is a sexually transmitted infection, so my guess is that you acquired it through having sex.