Flowers, a back rub, make dinner ( you can find some mad simple recipes on the internet), then before foreplay, kiss every part of her body after exclaiming how beautiful your girl is.
take out the end of that if shes not down for some intimacy
just try to be thoughtful, cute, and sincere. What you can’t actually do, fake the shit out of. I’ve found that spending time and being genuine are normally what pays off