Black cats

I have a full grown female black cat, she's probly 2-3 yrs old, just acquired another black cat, or kitten, it's a boy, and about 7 weeks old. Will these two every get used to each other & get along? I show my 1st cat she is loved & we aren't forgetting about her too.

They will get used to each other. It's going to take a lot of hissing and spitting and some slapping, but in a few weeks, maybe a month or so, they'll get it all straightened out! Just let them "duke" it out.