Feeling so hurt ..

Been married for 6 years I'm always starting the sex husband hardly ever wants to. And today I found porn sites on his phone I'm so hurt because I do everything to please him and I'm so confused and hurt on why he would rather watch that instead of being with me. He said he hardly ever watches it but idk if I believe him. Idk if this is why he's not interested in being with me or not and it's killing me. Idk what to do.