You can use white-space: nowrap; to define this behaviour:
// HTML:
.nowrap {
white-space: nowrap ;
}
<p>
<span class="nowrap">How do I wrap this line of text</span>
<span class="nowrap">- asked by Peter 2 days ago</span>
</p>
// CSS:
.nowrap {
white-space: nowrap ;
}