This girl I work with said “I can’t talk to you anymore”

We alway talk at lunch and we talk if we end up stocking the same isles. She came up to me before work last night and she said “we can’t talk anymore” I asked her “did I do anything wrong or say anything wrong” she said “no, my boyfriend came in and saw me talking to you and he doesn’t want me talking to you” I said “did you tell him we just coworkers” she said “I told him that he just jealous guy” I said “if that’s want you want I’ll do it” at lunch I went out side sat in my truck.