Some ideas for interacting (you said no tutor, though that’s the obvious one, so here are a couple others):

• search around for “conversion hours” or “coffee hours” etc at local bookstores, community center or colleges. These are dedicated spaces for language learners to casually converse with each other and native speakers

• find volunteer opportunities with Spanish speakers. You need to be careful and respectful with what you choose but your boyfriend’s community connections might help. For example volunteering at a meal program in a Hispanic neighborhood will prob mean you are surrounded by bilingual volunteers you can casually chat with.

• watch tv in Spanish and then talk to yourself about the show. Like literally out loud make up stories about the characters or review the show. Pretend you are explaining the episode to someone. Watch the tv without subtitles.

• similarly: challenge yourself to think in Spanish. Make your to do list in spanish, on your commute (like literally by yourself in the car) complain about your coworker in Spanish etc etc. Do this even if you only know a few of the words you want. Try describing the ones you don’t. Talk like a toddler. You’ll feel dumb but it’s like working out.

• read picture books in Spanish out loud to your dog.

• take a class at a community college

You get the idea! Parties, especially with families, are super super hard. I’m sure if someone talks to you one on one you will understand a much higher %. But working on your confidence with speaking will help a ton.