My best friend thinks I will kill my self

I kind of regret opening up about it. I only get the thoughts on my really bad days or when something really bad happens or I’m having an really bad time but I no longer act on them like I did as an teenager. I tried to end my life over 10 times as an teenager. I didn’t tell her I want to kill my self , I just said she has saved my life more times than she would ever know and I’m here so she doesn’t get heartbroken if I wasn’t. Now she’s constantly asking me if I’m ok and to message her on the days we aren’t at work or work different days just so she knows I’m still alive.