What is wrong with my boyfriends eye it swollen and sore not a stye its pink?

There are many possible causes for a swollen and sore eye that is not a stye and is pink. Some of the most common causes include:

- Conjunctivitis (pink eye): This is a common infection of the conjunctiva, the thin membrane that lines the eyelid and covers the white part of the eye. It can be caused by bacteria, viruses, or allergens, and is often accompanied by redness, swelling, itching, and discharge.

- Blepharitis: This is an inflammation of the eyelids, which can cause swelling, soreness, redness, and crusting. It can be caused by a variety of factors, including bacteria, allergies, and certain skin conditions.

- Keratitis: This is an inflammation of the cornea, the clear outer layer of the eye. It can be caused by a variety of factors, including infections, injuries, and autoimmune diseases. Symptoms can include pain, swelling, redness, and blurred vision.

- Uveitis: This is an inflammation of the uvea, the middle layer of the eye. It can be caused by a variety of factors, including infections, autoimmune diseases, and certain types of cancer. Symptoms can include pain, swelling, redness, and blurred vision.

It is important to see a doctor if you are experiencing any of these symptoms, as they can be signs of a serious underlying condition. The doctor will be able to diagnose the cause of your symptoms and recommend the appropriate treatment.