Is this wrong?

Is it bad that sometimes I use my vibrator before my boyfriend comes over or before I go to his house? This only happens every so often but i know if he found out he would be so hurt but at the same time in my heart i know i’m not cheating on him or really doing anything wrong, i literally think of him when i use it. i just know that i have a much higher sex drive than him and that always leaves me wanting more but he’s just always too tired for more than one round. i get lucky if i get two rounds at this point, and that’s fine i understand he does physical labor for work and that wears on a person but i feel like i shouldn’t feel bad for taking care of myself sometimes because of that especially because it’s not like i want to use my vibrator more, it’s my libido that doesn’t match his :(

Sincerely, 19 year old college student in a four year relationship with a 21 year old who works construction