Pleasure Of Dildo

So last night me zulema (17 F) bought my first dildo online and I’m going to pick it up at the store today. I wish I lived alone to try it out, but my boyfriend (25 M) lives with me. We have been interested in toys, however when I mentioned a dildo, he insisted that I stick to his size so I won’t get stretched out. I’m a petite woman and I know I can take more than my boyfriend. He doesn’t know that. I’ve been wet all night just thinking about using this. I’m so excited, but also conflicted. Should I tell him I bought a fake cock? I’ve always wanted to have a threesome with two men that adore me. I guess it’s wrong but we haven’t had good sex in so long. I just need something more. This dildo is only 10 inches, but I know I want to upgrade to at the most an 12 incher. I can’t wait to suck on this. I’m wet right now just typing while he’s next to me