The problem of dryness affects many women who may or may not have vaginismus and is well known to be a problem during menopause. I would urge you to use lubes as long as you have this problem otherwise you may experience tearing and pain after.
You can do research on the various lubes, such as water based (Slippery Stuff, Yes, etc); silicone based lubes (such as Slippery stuff), oils such as Olive or Coconut oil and thicker products like Cocoa butter. The thicker the lube, the more friction a male experiences which is needed for climax. Some do well with thinner lubes, you just have to experiment.
Vaginal moisturizers may not be enough but it could be worthwhile to try these such as Replens vaginal moisturizer.