Everyone likes to contribute, and they will ask to. It is OK to say yes, or even plan on it. It's also nice to provide everything, so again plan ahead and stick to it. Ask all of your guests to bring one dish, but ask them to share with you, or everyone invited (another bonus to use an invitation!) so you ensure you don't have 6 desserts and 1 entrée. As well, you can offer to provide the food, but request everyone bring the beverage of choice. This can help reduce cost and ensure everyone has what they would prefer to drink.
Cook pasta per directions on the package (will be similar to cooking pasta). Rinse with cold water and set pasta aside. Slice all of the cherry tomatoes into halves or quarters based on your personal preference. In a large bowl, squeeze the juice from 1 lemon, add the white balsamic vinegar and fresh parsley. Whisk in the olive oil until it fully incorporates. Next add the tomatoes and fresh basil. Mix in the cooked couscous and feta cheese. You will want to ensure the couscous has cooled so it does not melt the cheese. Fold everything in until completely coated and evenly distributed. Salt and pepper to taste, and serve!
Quick Tip: Add grilled chicken or any of your other favorite ingredients to make it a full entrée.