You and your man get an A+ in sharing. But he deducts points when you steal his favorite tee.Now there’s no need: The new Marine Layer boutique in the Marina is — to the relief of boyfriends everywhere — launching a women’s line of insanely soft tees today.There are slightly sheer slub V-necks (our favorites are the cornflower blue and putty gray, shown here) and crewnecks (long and short sleeve) made from Marine Layer’s signature cotton and micromodal blend. Go neutral with white or navy; assert your royalty with the appropriately named Purple Rain.A few graphic tees for gals are in the works, as are lightweight hoodies. And you can still get free shipping and returns if you order online. So you have no excuse not to get your BF one, too.Marine Layer, 2209 Chestnut Street, at Pierce Street (415-407-4043 or marinelayer.com), $29-$39.Photo: Courtesy of Marine LayerBookmark our spring 2011 Fashion Week site; add it to your RSS feed (nerd!); and check back often for tips, tricks, and the best damn giveaways this side of the blogosphere.Fashion Week Pop-Up ShopGet free shipping and a $50 credit for your next purchase when you spend $250 in our pop-up shop featuring five up-and-coming designers. Samantha Pleet debuts today. Check Swirl all week for new sales.