Florida: Roommate is trying to sublease to another female who wants to have her permanent boyfriend move in as well. Not comfortable with the idea, possible new tenant doesn't care

I live on off campus housing that allows coed or single sex living (but, if you plan to live coed, all roommates must agree in writing to be "okay" with living with the opposite sex).

My sublease states that it is only one person allowed per one room.

I live in a 2/2 apartment, and my current roommate has left for the summer and plans to sublease. A female has expressed interest in subleasing, and plans to bring her boyfriend to live in our 2/2 apartment along with 2 pets (which aren't allowed in the first place)

I am not comfortable living with another man; let alone 2 complete strangers. My rent is pretty expensive, and there is a cap on utilities. If we go over in utilities, the overage is split equally among roommates.

I have expressed that I would be uncomfortable with this possible roommate subleasing and bringing her boyfriend, and she essentially told me she doesn't really care and has made up her mind.

What are my rights here? Can I send the screenshots of our conversations to the leasing office? She states several times that she will get around having her boyfriend on the lease by just having it under her name.

I'm really worried, especially since I'm new to the area and already paid $300 for the application fee and cannot break my lease without more penalties.

Thanks for your help.