help !!!

so I know it's a strange question it i don't know what to do. basically I'm 19 years old and have been masturbating for about 8 years and me and my partner have recently be using sex toys to spice things up a little and Every time we use it i get to this point where I feel like I'm going to orgasm then move him off the spot or stop before. it kinda feel like I can't handle much more now has anyone had this problem. and is it like a barrier I have to break through or what I'm so confused because I'm always so close but so far ? 😕😔