How can I walk into Starbucks without feeling bad?

For the past 3 months I have bought something at Starbucks. Ive gone to one specific store 2–3 times a week only because it is close to where I work. Sometimes I get refills at least 5 times on my tea.
At first, I got to know this really nice barista named Bob, and he has gotten used to me until one day when I really needed some more tea and got 10 refills. He is the only nice barista in that store that I really socialise with. I guess sometimes I flirt on accident, because I have a tendency to do that. That was only 2 weeks ago. From that point on I have a feeling that he thinks that I like him and I go there just to go see him. Not true.
I cant even walk in there without trying to avoid him and everything. Recently I met another barista in that same store, but sometimes I catch him talking with Bob and they stare at my direction.
I know I can go into another cafe, but the locals are really bad. I dont know what to do!
Now, when I order my drink and Bob is at the cashier, I’m not as enthusiastic and I tend to look away. UGH.
Help??