<human>: Can you summarize the given text in a few sentences?

I have been in a relationship with the same girl for the past six years, I am 23 she is 22, and I recently discovered she lied to me about something rather significant in my eyes.

Background:

For the most part our relationship has been great although in the beginning I admittedly  had some jealousy issues and made accusations without any evidence. I have since worked on those issues and, while i do still get jealous from time to time not nearly to the degree of throwing around accusations anymore, I am far less jealous and more secure in my relationship. 

I love this girl to death i would give anything and do anything for her. She claims to feel the same and up until recently i have believed her whole heartily. She is everything i could ever dream for, she is beautiful, smart, funny, fun, determined, just the total package.

Problem:

The past few weekends she has been going to the shore with her best friend, or so she has said. However her body language and desire to not really talk about her nights down there were beginning to make me uneasy. I chalked this up as my jealousy trying to rear its ugly head again. However this morning on my way to the gym I drove past her friend, who she was supposed to be down the shore with, turning into the local restaurant she works at. That was around 10 this morning ,EST. We live about an hour and half from the shore and she was supposed to be sharing a hotel room with my girlfriend, which means she would have had to leave at 8:30 to come and go straight to work.

Question:
I feel as though my concerns have been confirmed and she hasn't been going to the shore with her but instead someone else. I am extremely hurt i feel as though my heart has been ripped in half and i want to express this to her and get answers but i don't want to seem like it's jealousy. Reddit what should I do please help.
<bot>: Caught the love of my life lying to me about who she went down the shore with last night and i don't know what to do please help!