ATTENTION SEXY WOMEN: I need ADVICE on how to incorporate lingerie into my sex life!

So I had been having sex with this guy for around 2 years - it was just us the whole time, neither of us slept with other people. He's an engineering major & im accounting, which both have huge work loads, so we really didn't have time for more than just meeting up really fast & hooking up. We're both older now & thinking about the future so about 4 months ago we decided to actually start dating. I want this to feel like a slow, intimate relationship. I feel like lingerie would maybe help us slow things down and be more in the moment then just hooking up like we used to. The one time I did try anything, it was a blue lacy bralette & when he took my shirt off he was like "What's this?" & I got all embarassed.