How do I get my boyfriend to ejaculate faster before I get bored?

You can't. There are no medications that will allow a man to ejaculate faster. On the opposite side of the spectrum, there are certain medications used to treat premature ejaculation.
What a shame. Most couples enjoy delayed ejaculation so the sex act can last longer. Shame you don't enjoy it. Have you dicussed this with your boyfriend? Consider jointly meeting with a sex therapist if you intend to spend the rest of your life with this boyfriend.