Ex-coworker (20sF) smuggled bed bugs in my (21F) boyfriend's (22M) clothes to get him fired?

So, my (21F) boyfriend (22M) has this Co-worker called "C" (probably too begin 20s idk) and she is super into him. She keeps calling him she keeps pestering him about how she "used" to be into him in High School and how "sad" she is that she couldn't get him.

They worked together and she kept flirting with him and tried to be always around him to the point every other co-worker called them a "work couple". I am so uncomfortable because she basically is trying to take over my place and is trying to get his girlfriend DESPITE her having her own boyfriend what she keeps telling my boyfriend that he is toxic.

He kept talking about me as his girlfriend to his colleagues and how he only wants me but she kept flirting and she kept making sure she gets all his attention at work, in the breaks, and when he was on his way home.

I honestly think she only uses the I am so into you since High School just because she wanna justify that my boyfriend got "hot" now by getting tattoos, dying his hair, losing weight, being less nerdy, letting his hair grow out and styling his hair better because before they have NEVER EVER talked before and he told me he was bullied by EVERYONE in his classes for his weight, appearance, etc.

I do not think she ACTUALLY loves him and just wants him just cause he looks a certain way. But the most annoying incident is that she wanted to get her first tattoo and ASKED MY BOYFRIEND to come with her and hold her hand (in middle of corona i might add!!!!!!) because he knows sooo much about tattoos cause he got 10 or 11 himself so she needs ONLY HIS advice.

So he got with her despite me saying no don't do that I am not comfortable, she snatched his phone from him, probably whimpered the entire time to extra get his entire attention cause he would get mad at me texting him and said he needs to help her.

She called him DAILY 5 minutes after he is gone from work, she spammed him with stickers, she kept trying to relate to him and his interests over and over and she cries herself out so much only to him.

I told my boyfriend to talk with her about why she is like that and if she could tone it down and she answered "Lol, I didn't do anything wrong".

Honestly I even think she is the reason why my boyfriend got even fired at work for having bedbugs because it cannot be that my boyfriend's home is anyhow dirty I saw his house many times, yes some parts of the house are still being worked at but he cleans daily his clothes (like literally wash them and dry them every day), he is changing his bed sheets every week, he washes himself daily, etc.

I know he is nowhere dirty, he sends me daily pics of himself in his work clothes (just for like that I do not miss him too much) and never have I ever seen a bedbug on there or anything. He doesn't have any enemies as we both know cause his exes don't give a damn about him but all I know is last time the both talked was before I told him to please go low contact with her only work related because I feel uncomfortable around her and he did then go low contact.

The other co-workers loved my boyfriend since they basically kept being nice to him, made him feel like he belonged there and he had honestly fun at work and found also out that what he did he wanna then study in University (since he worked under the table in this job actually) and that this is his dream job.

I honestly feel like that it is this co-worker cause she kept pursuing him even more when he was starting to talk about how my boyfriend and I are together since 4 years, that we both want a future with each other and that he basically is in love with me.

I know I got no evidence on that she was it that gave him the bedbugs but could it be that she might have done it to get him fired or do I maybe interpret something in???? His mom worked in the same building as him and if my boyfriend would be having bedbugs wouldn't she be having them as well as she basically washes her clothes with his, live under the same roof, they hug each other, they drove in the same car to work, etc.

tl;dr: boyfriend's coworker is madly in love with him but he only wants me. Could it be her that smuggled bedbugs to him to get him fired or am I going crazy?