I used straws for 3 years, but recently gave them up. I just drink normally now unless it's a very dark liquid (grape juice or something). Oh yeah, avoid tomato sauce, it stains the lips and makes it all yellow orangey for a week or so until it peels off.
Avoid using natural oil as a lip moisturizer. I'm talking about olive oil from the kitchen, etc. I got several bouts of yeast and bacterial infections while using natural oils. Pretty much it was coating the lips 24 hours a day with food oils which feed bacteria and fungus. It's probably better to use commercial lip balms since they're engineered to resist bad growths.