This was quite the popular song at karaoke in Japan during my Gunma and Ichikawa days. I can distinctly remember the various karaokettes (yep, my own word) singing "Try to love, try to be loved."
Since this was a Miho Nakayama（中山美穂）song at the turn of the decade, "Aishiterutte Iwanai!" (Don't Tell Me You Love Me!) has more of that contemporary uptempo dance-pop beat to it. And considering the title, I could imagine Miporin skipping down a Tokyo street trying to get away from some of her insistent admirers as in a trendy drama. In fact, it was the theme song for one of her star vehicles on Fuji-TV, "Suteki na Kataomoi"（すてきな片思い...A Wonderful One-Sided Love）from October 1990. I never caught the show but I vaguely remember seeing the opening credits with Miho and cast goofing about on screen as they usually do in such a program.
"Aishiterutte Iwanai!" was released as Nakayama's 20th single just a week after the drama premiered. The lyrics were by Yoshihiko Ando （安藤芳彦）and the music was by Hitoshi Haba（羽場仁志）. It peaked at No. 3 on Oricon and ended the year at No. 69 on the annual charts, and even lasted a year later as the No. 85 song of 1991. No wonder my karaoke memories have that song well-embedded.